JDK9新特性-改进进程管理 API

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import java.time.ZoneId;

  import java.util.stream.Stream;

  import java.util.stream.Collectors;

  import java.io.IOException;

  public class ProcessHandleTester {

     public static void main(String[] args) throws IOException {

        // Windows 有效

        ProcessBuilder pb = new ProcessBuilder("notepad.exe");

        String np = "Not Present";

        Process p = pb.start();

        ProcessHandle.Info info = p.info();

        System.out.printf("Process ID : %s%n", p.pid());

        System.out.printf("Command name : %s%n", info.command().orElse(np));

        System.out.printf("Command line : %s%n", info.commandLine().orElse(np));

        System.out.printf("Start time: %s%n",

           info.startInstant().map(i -> i.atZone(ZoneId.systemDefault())

           .toLocalDateTime().toString()).orElse(np));

        System.out.printf("Arguments : %s%n",

           info.arguments().map(a -> Stream.of(a).collect(

           Collectors.joining(" "))).orElse(np));

        System.out.printf("User : %s%n", info.user().orElse(np));

     }

  }

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[[url=mailto:yufei@www.twle.cn]yufei@www.twle.cn[/url] java9]$ javac ProcessHandleTester.java && java ProcessHandleTester

    Process ID : 5800

    Command name : C:\Windows\System32\notepad.exe

    Command line : Not Present

    Start time: 2017-11-04T21:35:03.626

    Arguments : Not Present

    User: administrator